It's the second door right? Everyone is saying it's the locked door, but is it the one with all the treasure chests at the foot of all the bed things? There is that one chest that is locked but I can't pick it. Not because my skill is too low but the hand icon is over San's head and just won't let her. If it's another door then the only other one is by the red emerald which is the throne room which can't be opened at all. T.T Please help, I want to beat that 13th summon already.